San Francisco Giants' Madison Bumgarner, right, is congratulated by third base coach Tim Flannery after hitting a grand slam off Arizona Diamondbacks' Matt Stites during the sixth inning of a baseball game Sunday, July 13, 2014, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Madison Bumgarner watches his grand slam off Arizona Diamondbacks' Matt Stites in the sixth inning of a baseball game Sunday, July 13, 2014, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Buster Posey (28) is congratulated upon returning to the dugout after hitting a grand slam off Arizona Diamondbacks' Vidal Nuno in the fifth inning of a baseball game Sunday, July 13, 2014, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Madison Bumgarner (40) is congratulated upon his return to the dugout after hitting a grand slam off Arizona Diamondbacks' Matt Stites in the sixth inning of a baseball game Sunday, July 13, 2014, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants' Madison Bumgarner, right, is congratulated by Brandon Crawford (35) after Bumgarner hit a grand slam off Arizona Diamondbacks' Matt Stites in the sixth inning of a baseball game Sunday, July 13, 2014, in San Francisco. (AP Photo/Ben Margot)

San Francisco Giants starting pitcher Tim Hudson throws against the Oakland Athletics in the first inning of their interleague baseball game Thursday, July 10, 2014, in San Francisco. (AP Photo/Eric Risberg)